Koch, a Michigan native, was selected as a NASA astronaut in 2013. She is scheduled to launch next week and will join the International Space Station as a flight engineer, according to NASA.

First fit check of our actual spacecraft - the Soyuz rocket! This will be the last time we test the systems while wearing our launch and landing space suits. Great to see the real deal with the crew! pic.twitter.com/H7SdhgFuSn

Earth’s 3rd day started with getting the blood (plasma?) pumping! First the treadmill, then weights - he even got some deadlifts in with me. It is important to exercise every day, not just for our muscles but also to protect our bones from losing density in microgravity. pic.twitter.com/gIsiKt4K8S